{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:QNU57JOD3MY2HD2LJFCESBVTEB","short_pith_number":"pith:QNU57JOD","canonical_record":{"source":{"id":"1501.07384","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.hist-ph","submitted_at":"2015-01-29T09:12:38Z","cross_cats_sorted":["hep-th","quant-ph"],"title_canon_sha256":"75f0574fc121facb5404acb1061566e6ce1b03f7d4f7e370282745530b9220fb","abstract_canon_sha256":"c32ff88d93b8ca3bab250dd1b910cc1bef45fcb05821f26fa10edb66035454df"},"schema_version":"1.0"},"canonical_sha256":"8369dfa5c3db31a38f4b49444906b32069a614b334e4fca0630f1f0c5bcea533","source":{"kind":"arxiv","id":"1501.07384","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.07384","created_at":"2026-05-18T01:55:32Z"},{"alias_kind":"arxiv_version","alias_value":"1501.07384v1","created_at":"2026-05-18T01:55:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.07384","created_at":"2026-05-18T01:55:32Z"},{"alias_kind":"pith_short_12","alias_value":"QNU57JOD3MY2","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"QNU57JOD3MY2HD2L","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"QNU57JOD","created_at":"2026-05-18T12:29:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:QNU57JOD3MY2HD2LJFCESBVTEB","target":"record","payload":{"canonical_record":{"source":{"id":"1501.07384","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.hist-ph","submitted_at":"2015-01-29T09:12:38Z","cross_cats_sorted":["hep-th","quant-ph"],"title_canon_sha256":"75f0574fc121facb5404acb1061566e6ce1b03f7d4f7e370282745530b9220fb","abstract_canon_sha256":"c32ff88d93b8ca3bab250dd1b910cc1bef45fcb05821f26fa10edb66035454df"},"schema_version":"1.0"},"canonical_sha256":"8369dfa5c3db31a38f4b49444906b32069a614b334e4fca0630f1f0c5bcea533","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:55:32.932914Z","signature_b64":"wymXWOSGC6lP9nnv65xzfzAxgerheXaut/m97IlnlxL22apba0pOC/nHVqe3ezdDPCZuyqUqSun7elBScRiMBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8369dfa5c3db31a38f4b49444906b32069a614b334e4fca0630f1f0c5bcea533","last_reissued_at":"2026-05-18T01:55:32.932154Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:55:32.932154Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1501.07384","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:55:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ltAcPj860Huwl9/c5Sk2RmsqQb7frZLoYEqUwdccBNs17juiDGm0tmwiX2VSIb/4hoPHq9p1nWcClbN5FCelBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T06:11:05.090738Z"},"content_sha256":"24464415bbdb3117914f32d993c2aa88d9f5718fedb86a7246ca2554c5d83fcf","schema_version":"1.0","event_id":"sha256:24464415bbdb3117914f32d993c2aa88d9f5718fedb86a7246ca2554c5d83fcf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:QNU57JOD3MY2HD2LJFCESBVTEB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Cofounder of Quantum Field Theory: Pascual Jordan","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th","quant-ph"],"primary_cat":"physics.hist-ph","authors_text":"Walter Dittrich","submitted_at":"2015-01-29T09:12:38Z","abstract_excerpt":"A comparative study is undertaken that brings to light the two different methods of how to treat the many-body problem in quantum field theory. The two main researchers who published the first versions of how to quantize a many-body assembly were P. Jordan and P.A.M. Dirac. What they understood by the so-called \"second quantization\" will be the subject of the paper. We will argue that it is Jordan's field operator approach that until now constitutes the basis of any work in quantum field theory."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.07384","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:55:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sumww5O57+rSc5zshUCOA7bAriJIbJTpM/ymwIIQ83fo65OWyoK2i0HzCn9S1XPC4q3/SgJF/jpvK5YQPVYnDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T06:11:05.091398Z"},"content_sha256":"f7566040c9f1e69fe4be1f1d24eeae1d41aafe9565ecd8881ca1c84145cf2827","schema_version":"1.0","event_id":"sha256:f7566040c9f1e69fe4be1f1d24eeae1d41aafe9565ecd8881ca1c84145cf2827"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QNU57JOD3MY2HD2LJFCESBVTEB/bundle.json","state_url":"https://pith.science/pith/QNU57JOD3MY2HD2LJFCESBVTEB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QNU57JOD3MY2HD2LJFCESBVTEB/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-31T06:11:05Z","links":{"resolver":"https://pith.science/pith/QNU57JOD3MY2HD2LJFCESBVTEB","bundle":"https://pith.science/pith/QNU57JOD3MY2HD2LJFCESBVTEB/bundle.json","state":"https://pith.science/pith/QNU57JOD3MY2HD2LJFCESBVTEB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QNU57JOD3MY2HD2LJFCESBVTEB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:QNU57JOD3MY2HD2LJFCESBVTEB","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"c32ff88d93b8ca3bab250dd1b910cc1bef45fcb05821f26fa10edb66035454df","cross_cats_sorted":["hep-th","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.hist-ph","submitted_at":"2015-01-29T09:12:38Z","title_canon_sha256":"75f0574fc121facb5404acb1061566e6ce1b03f7d4f7e370282745530b9220fb"},"schema_version":"1.0","source":{"id":"1501.07384","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.07384","created_at":"2026-05-18T01:55:32Z"},{"alias_kind":"arxiv_version","alias_value":"1501.07384v1","created_at":"2026-05-18T01:55:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.07384","created_at":"2026-05-18T01:55:32Z"},{"alias_kind":"pith_short_12","alias_value":"QNU57JOD3MY2","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"QNU57JOD3MY2HD2L","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"QNU57JOD","created_at":"2026-05-18T12:29:37Z"}],"graph_snapshots":[{"event_id":"sha256:f7566040c9f1e69fe4be1f1d24eeae1d41aafe9565ecd8881ca1c84145cf2827","target":"graph","created_at":"2026-05-18T01:55:32Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"A comparative study is undertaken that brings to light the two different methods of how to treat the many-body problem in quantum field theory. The two main researchers who published the first versions of how to quantize a many-body assembly were P. Jordan and P.A.M. Dirac. What they understood by the so-called \"second quantization\" will be the subject of the paper. We will argue that it is Jordan's field operator approach that until now constitutes the basis of any work in quantum field theory.","authors_text":"Walter Dittrich","cross_cats":["hep-th","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.hist-ph","submitted_at":"2015-01-29T09:12:38Z","title":"The Cofounder of Quantum Field Theory: Pascual Jordan"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.07384","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:24464415bbdb3117914f32d993c2aa88d9f5718fedb86a7246ca2554c5d83fcf","target":"record","created_at":"2026-05-18T01:55:32Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"c32ff88d93b8ca3bab250dd1b910cc1bef45fcb05821f26fa10edb66035454df","cross_cats_sorted":["hep-th","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.hist-ph","submitted_at":"2015-01-29T09:12:38Z","title_canon_sha256":"75f0574fc121facb5404acb1061566e6ce1b03f7d4f7e370282745530b9220fb"},"schema_version":"1.0","source":{"id":"1501.07384","kind":"arxiv","version":1}},"canonical_sha256":"8369dfa5c3db31a38f4b49444906b32069a614b334e4fca0630f1f0c5bcea533","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8369dfa5c3db31a38f4b49444906b32069a614b334e4fca0630f1f0c5bcea533","first_computed_at":"2026-05-18T01:55:32.932154Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:55:32.932154Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wymXWOSGC6lP9nnv65xzfzAxgerheXaut/m97IlnlxL22apba0pOC/nHVqe3ezdDPCZuyqUqSun7elBScRiMBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:55:32.932914Z","signed_message":"canonical_sha256_bytes"},"source_id":"1501.07384","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:24464415bbdb3117914f32d993c2aa88d9f5718fedb86a7246ca2554c5d83fcf","sha256:f7566040c9f1e69fe4be1f1d24eeae1d41aafe9565ecd8881ca1c84145cf2827"],"state_sha256":"2ccd2e44941d4cb2fee2545fbac0a5d1a6cca432075c17a18c2c18a8248aa7e0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1pJJtgfd1TWn2zWpwsrsNwxIuZX2GlawLqG065s8rk0HSJzKTAT1BQ89Zvr5YsNSRuFCilTAYwmgf9kFH3dNAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T06:11:05.094982Z","bundle_sha256":"2c8748eba58db99f5bd852b51c503ae9dc1efc829af8204e05dde21f9eb438e5"}}